Spacing mechanism for type-bar-making machines.



' D. PETRl-PALMEDO & E. F. GODDARD.

SPACING MECHANISM FOR TYPE BAR MAKING MACHINES.

. APPLICATION FILED SEFT.3, 9M. 1,200,228.

Patented Oct.

a SHEETS'SHEET x.

n. PETRI-PALMEDO & E. F. GODDARD. SPACING MECHANISM-FOR TYPE BAR MAKING MACHINES.

APPLICATION FlLE-D SEPT. 3, 1914.

1,200,228.' Patented 00:. 3,1916.

3 SHEETS-SHEET 2.

m I ,Zgyergzjfd? 16615 61; m W n Q W& W

Cgfl'wwgy 7 W W n. PETRI-PALMEDO & E. F. GODDARD.

. SPACiNG. MECHANISM FOR TYPE BAR MAKING mamas.

.APPLICATION BIL-ED SEPT. 3. 1914.

1,200,228. Patented 0.... 3,1916.

3 SHEETS-SHEET 3.

WW I f UNITED STATES,

PATENT OFFICE.

DAVID PE'I'RI-PALMEDO, F BRIDGEPORT,

AND EDWARD F. GODDARD, OF STRATFOR'D,

CONNECTICUT, ASSIGNORS "110 ELECTRIC COMPOSITOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF JERSEY.

SPACING MECHANISM FOR. TYPE-BAR MAKING MACHINES.

Specification of Letters Patent. I

Patented Oct. 3,1916.

.Application filed September 3, 1914. Serial No. 860,096. g

To all whom it may concern Be it known that we, DAVID PETRI-PAL- MEDO and EDWARD F. GODDARD, citizens of the United States, and residents, respectively, of Bridgeport, in the county of Fairfield and State of Connecticut, and Stratford, in the county of Fairfield and State of Connecticut, have invented a certainnew and useful Improvement in Spacing Mecha-, nism for Type-Bar-Making Machines, of

which the following is a full, clear, and exact description.

This invention relates particularly to the 7 kind of circulating matrix type bar making machines in which the justification of the matrix line is effected by means of expanding wedge space bands placed between the words. In operating machines of this sort many short lines are set. in operating machines of this characteras they have heretofore been constructed, to quad out each short line so that saidtli'ne v composed of matrices, quads and expanding expanding the space bands therein.

space bands, shall be of justifiable length,

i. 6. can be spread to standard length by p the detent slide and the cam plate trip mech- The addition of the quads to the short lines takes considerable time, and very ma terially reduces the output of such machines, and is therefore objectionable.

It has been proposed to use atthe rear end of the matrix line to clamp the same for cooperation with the mold, a spring actuated movable end clamp which will close so much of the mold slot as is not covered by the short line, and to thereby render the use of quads unnecessary. Such an end clamp has been used successfully in machines which did not use expanding space bands for justifying lines. Attempts have" also been made to use such an end clamp in machines in which the wedge space bands were used, but this heretofore has not been attended .with satisfactory results, because when the space bands in a short line were expanded by the mechanism provided for that purpose the movable parts of the space bands are driven up so far that the parts of the space bands in the line become abnormally and undesirably wide.

The object of this invention is to produce,

1 for presentation to the mold, in a machine which employs the spring actuated mold closing end-clamp, and WhlCh also employs It is customary,

h'asmovecl up such a distance as to cause the space bands between the matrices to be-- come-of ideal, or, as commonly stated, of normal width. The means by which this is accomplished automatically or at will", when the lines are short, constitutes the present invention. which is shown in the drawing, and hereinafter described and definitely pointed out in the appended claims.

Inthe drawing, Figure 1 is a front elevation of so much of a; type bar making machine as is necessary to a complete disclosure of the present invention. Fig. 2 is a side elevation of said mechanism partly sectioned in the plane indicated by line 2-2 on Fig. 1. Fig. 3 is a front elevation of a part of anism adjustably secured thereto. Fig. 4 is a plan view of the mechanism shown in Fig. 3, and the adjacent mechanism adapted to be operated by said trip mechanism. Fig. 5 is a sectional plan view of the line carrier. Fig. 6 is a side elevation of the elevator showing the normal position of certain parts thereon when the elevator is supporting a full line. Tis a side elevation of the same mechanism showing the same parts in the position they will occupy when the elevator contains a short line. This figure also shows a part of the justifier hammer in section. Fig. 8 is a right end view of'certain mechanism associated with the rock shaft.

In machines of this general character and particularly in the machine for which this invention in the precise form shown was designed for use, the unjustified matrix line, i. e. lines composed of matrices M and wedge space bands S are assembled on assembling rails R. The middle portions of these rails are broken away as shown in Fig. l, but those familiar with this art will understand that they are long enough to hold the longest matrix line "upon which themachine adapted to cast a slug.

To do that, means are pro-' pushes the unjustified matrix line, made up of matrices and wedge space bands, onto the elevator E. The elevator then descends, carrying the matrix line between a fixed abutment A and a movable end clamp L. This end clamp is ahorizontally movable slide, whose rear face is in the same 'vertical plane as therear faces of the assembled matrices. lVhen the matrix line, supported by the I elevator, is clamped between the abutment A and the movable end clamp L, the justifier hammer H is moved up by the action of a spring (not shown) and thereby the dependmg members 8 of the wedge space bands S are moved up equal distances, thereby expanding the space bands and spreading the line, which, as it spreads, thrusts to the right against the movable end clamp.

All of the parts above referred to and suitable mechanism for actuating them are so well understood in this art that it has not been thought necessary toshow. them to any greater extent than they are shown in the drawing, or described them any more completely than they are herein described. The elevator referred to is the onewhich is known in this art as ,the first elevator; and is to be found associated with suitable actuating mechanism in all linotype machines.

The present invention is wholly independent'of any particular mechanism for moving said elevator.

The line clamping mechanism which may be employed to clamp the line on the elevator, when the latter has been lowered is fully described in the application of Palmedo and Goddard,'filed August 5, 1914, Serial No. 855,259, which application also shows and describes the means by which the justifier hammer is actuated by a spring in the space band expanding direction. Suitable mechanism for actuating the line carrier is shown and described in the Le 'Boeuf Patent No.

1,051,388; and the mechanism by which the space bands may be released, and particularly the means by which the depression of a space key causes one revolution of the shaft The elevator E carries a horizontal rock shaft-E to which is secured a dog E, which normally occupies the positionshown in Fig.

'6, where it will not interfere with the comdog is a buffer plunger H which is under the influence of a spring H which ,yieldinglyresists its downward movemr 1 relative to said hammer, thus preventing any shock to the mechanism. Thisplunger, however,

will eventually move down until its head engages the bracket H which carries it, and then further upward movement of the hammeris definitely stopped.

The dog E is normally held in the retracted position by the spring plunger E carried by'the upward extension of said dog, which plunger presses against a surface E on the elevator. This rock shaft also carries an arm E which overhangs the projecting end of the stop rod- G when said end projects to the left beyond the adjacent one of the two bearings F carried by the fixed frame work of the machine in which said rod is slidably mounted. The end of this rod does not normally project into the path of the arm E, but it may be made to so project by mechanism to be described, eithermanually, or automatically, when the line on the elevator is a short line. When it does proect and when the elevator goes down to carry the matrix line thereon into the casting position between the abutment A and the spring actuated end clamp L, the arm E will, strike the projecting end of said rod, and thereby rock the rock shaft E so as to carry the end of the dog E into the path of'the buffer plunger H before referred to carried by the justifier hammer. When,

now, the justifier hammer, actuated by its spring, goes up, it can only go far-enough to partly expand the wedge space bands S,'

thereby causing them to become of such width in the line as is required to produce what is known as normal spacing,that is to say, so that the words will be separated the ideal distances. Q

Mounted on the right, side of the elevator is a spring actuated'lever E under the influence of a spring E which acts to hold it against a pin E carried by' the elevator. When the elevator goes down to the casting position this lever'will strike the projecting end of the rod G and be swung upward until 'it passes such rod, whereupon said lever will resume its normal position. \Vhen, now, the elevator ascends, an inclined surface E on said lever will engage the end of rod Gr and will thereby push the same to the right into its normal position in which it will be automatically held by certain latchactuated lever G which is pivoted to; a: fixed bracket F The downwardly extended arm of this lever enters a notch G in the rod whereby when either the rod or lever moves position such that it will not strike the lever down and when the line carrier starts its movement to the left, and while the spring plunger is still held down, a little dog C pivoted to'the bracket C will beswung by a spring plunger 0 into anotch C" in said plunger, and thereby the plunger will be the other must move correspondingly. This, held down until the linecarrier again relever is under the influence of a spring Gr which acts to so swing the lever as to move the rod to the left. The upwardly extended arm of the lever G is normally engaged by a catch G which is likewise pivoted to the bracket F and is under the influence .of aspring G tending to hold it in the latching position shown. This catch has connected with it two arms G and, G The latter is in the form of a key upon which the operator may conveniently press to swing this catch into the lever releasing direction, which. will permit spring G to so rock lever G that the rod G will be moved to the left.

The arm G extends upward to a position where it may be engaged by certain mechanism to be presently described by which the catch G will be moved in the lever releasing direction when a short line is being moved along the assembling railsand onto the elevator. The arm G may obviously be omitted, since it is a mere convenience for watch and see when a short line was on the way to the elevator, and then manually trip the catch.

The line carrier C is merely a slide mov- -1i1g 1n fixed guideways and provided w1th an arm C adapted to engage the rear end I of the matrix line and push it along the as-- moved' to the left this pawl willengagethearm G and trip the catch G. This lever is under the influence of .a spring C tending to hold it in this position. It has an arm C which enters a notch in the plunger C v which is vertically movable in a bracket C carried by said line carrier. When this plunger is' moved down in opposition to spring C it swings the pawl C up into a turns to its normal position and causes said dog to engage a fixed part of the framework F and be thereby so swung as to withdraw it from the notch in the plunger. Thereupon the pawl C? will swing to its normal position shown in Fig. 1, and the plunger will be moved up to its normal positionl As before stated, a detent cl on the detent slide D extends in front of the growing matrix line which is being assembled on the assembling rails, and is moved to the left with the matrix line, step by step, by the star wheel packer P distances equal to the, width of the several additions of matrices and space bands to the line. A cam piece D is adjustably fixed to the detent slide D, and moves with it to the left as the line grows. The campiece D projects forward from a cam carrier D which is slidably mounted on the detent slide, D. A dog (I is pivoted to. the cam carrier and is under the influence of a spring (Z which acts to force said dog downward into engagement 1 G. When the plunger (l -has been moved with ratchet teeth 65 on the detent slide D.

By lifting this dog the cam carrier may be moved along the detent slide and to any desired position thereon to conform to the desired length of a justified line The detent slide is graduated as shown so that the operator may know when the cam carrier is at the desired point on the detent-slide. By

the time the line has reached justifiable length, this cam piece will have slipped under a. lever arm R or, more exactly, a roller R and will have lifted said arm. This arm is fixed to a rock shaft R which is mounted in fixed bearings F in which said rock shaft is likewise movable endwise. On this rock shaft R is an arm R which is provided with a tongue which enters a slot R in the rock shaft B, so that when the rock shaft R rocks, the arm R will rock with it. This arm R carries a set screw R which normally bears against the head of the plunger C i; When therefore the line has reached justifiable length, this cam piece D will have rocked the rock shaft R, andthereby the plunger C will have been moved down, and thereby the pawl C will have been moved up tothe position where it will not engage the arm G when the line carrier pushes said lineonto the elevator. All of the described. mechanism will therefore have no eflect in moving the rod G to.

the left if the line which is carried onto the elevator by the lower line carrier is a full or justifiable line. If, however, the line is:.a short line, then the cam piece D will.

not engage lever R and will not therefore pofclr the-rock shaft, and therefore the pawl G to be movedto theleft so that when the elevator descends. the dog E will bej'moved intolthe path of the ascending justifying hammer, so as to stop said hammer at the reqmred pomt 1n the spring-induced up Ward movement. I

The arm R liesbetween two of the bearinglbrackets F in which the rock shaft R is mounted, and therefore cannot partakeof, the endwise movements of said rock shaft,; which will now be described. This rock shaft is formed with gear teeth R on its lower side, which teeth engage the gear K which is under the influence of a spring K tending to turn it in the direction indicated by the arrow thereon in Fig. 1,that is to -,say,"in the direction such as will cause the rock shaft R to move'to the left when permitted to so move. There is fixed to this rock shaft a sleeve R having ratchet teeth. Adjacent to this sleeve is an actuating spring pawl R, which is pivoted to the depending arm of a bell crank lever B. One arm of this lever is in position to be engaged by a cam B which makes one revolution every time the'space key is actuated. The mechanism through which this cam is caused to so revolve is not new and is well understood and need not therefore be described. Every time it revolves, however, it rocks the lever R in opposition to its spring R whereby the pawl R will, by engagingthe ratchet *teeth on the sleeve R move the rock shaft AR to the right a definite distance. Adjacently there is a dog R which likewise e'nrgages said ratchet teeth and prevents said shaft from moving to the left. The dis .tance which this rock shaft moves to the right every time a space band is added to the line -is equal to the difl'erence inthe width of that partof the space band which lies between the matrices when the space band is narrowest, (that is to say, when the depending wedge member is hanging down) and the width of the said part' of the space band when it is at its widest (that is to say, when the depending wedge member has been driven up to its limit). A line is of justifiable length or is a full line when it is of such length that, by expanding to the limit all of the space bands, the line will come to .be of standard length. Therefore, since the space hands when they are introduced into the matrix line are thinnest, this rod is caused to move the stated distance, and thereby the arm R will be moved that much nearer the cam piece on the detent slide.

Therefore this cam piece will rock the rock shaft, not when the line made up of matrices and th1n space bands 'is of the required length, but when the line is of such length that" when said space bands are fully expanded,'1t will be of full or justified length.

If it were not for the provision of some such compensating measuring device as has been explained the justifying hammer would be prevented from expanding the 'space bands in all lines which were not of stand ard length before said space bands were expanded at all, and this, of course, will not do. It is, ofcourse, desirable to justify all lines which are justifiable in an ordinary way, and to only limit the justifying mechanism ofethe justifying hammer when the lines being spaced are too short'to be justified regularly.

' It will be understood that after a line has, been composed the detent D is withdrawn from in front of the line, and this permits the detent slide to be moved back to its starting point. It will be further understood that the dog R will be lifted out of engagement with the ratchet teeth on sleeve R and thereby the rock shaft R will be moved back to its initial position by the action of the spring K. It will be understood also that so long as full lines only are" composed and moved onto the elevator, the justifier hammer will be permitted to move unrestrainedly as far as is necessary to so expand the space bands that the line will be spread to standard length. But whenever the line presented to the action of the ustifier hammer is a short line,that is at unjustifiable line, then the upward sprii-g induced movement of the justifier hammer will be automatically restrained and united so that it can only move upward far enough to expand the space bands so that they will be of normal or ideal thickness between the words. This stoppage of the justifier hammer in its mid-position will be due to the engagement of the shoulderwhich is formed by the upper surface of the plunger H and, the shoulder formed-by the lower end. of the dog E Having described my invention, I claim: 1. In a type bar making machine, the combination of means for supporting and clamping a. line made up of matrices and wedge space hands, a justifier hammer for engaging the space bands and expanding them, spring actuated mechanism for operating said justifier hammer in the space band expanding direction, and means which act automatically to stop the spring induced advance of the justifier hammer at a predetermined mid-position when the line about to be justified is shorter than a full means for supporting an unjustified line space'bands and expanding them, and a dog carried by the first elevator and movable into and out of the path of a part which is connected toland moves with said justifier hammer.

3; In a type bar making machine, the

combination of the first elevator having means for supporting an 'unjustified line 'made up of matrices and wedge space bands, means for clampmg sald line, a spring actuated justifier hammer for engaging the spacebands and expanding them, said hammer and elevator being provided respectively with two shoulders of which one is movable into and. out of a position such that during the spring induced movement of the justifier hammer these two shoulders will contact and stop the movement of Sttld' justifie'r hammer.

In a type bar making machine, the combination of means for supporting and clamping a line of matrices and expanding spaoe hands, a spring actuated justifier ham merfor engaging and expandingsaid space ilbandspmeans for delivering a line of matrices and space bands into the embrace of "said 'ljnechanl'sm which, when the line which thereby has been moved into the embrace of a said. supporting and clamping means is shorter than a full length justifiable line, "will stop the spring induced movement of fj'd 'jus'tifier' hammer in a definite. mid- .r-ipos'itiom supporting and clampingmeans, and

5; In'atype' bar making machine, the

c'ombination of means for supporting and clamping'a line ofmatrice's and expanding space hands, a justifier hammer for engagthe space ha; s and expanding them,

iorrr'endering said means operative, a movspring actuated mechanism for operating said justifie'i hammer in the space band expanding direction, a dogwhich when permitted. to operate will engage and stop the ascent of the j ustifier hammer always in the same definite mid-position, means normally holding said dog out of action, and means to "cause it to move into operative position.

In 'a type bar making machine, the combinat n of means for supporting an unfg'itistiiicd line made up of matrices and Wedge space bands, a line carrier for moving said unjustified line into the embrace of said line supporting means, a spring actuated ustiiier hammer, normally inoperatlve means or limiting the spring induced movementof said justifier hammer, a train of mechanism :able device carried by the line carrier for causing said train of mechanism to operate, and means whereby the assembling of a full line of matrices Wlll prevent-the device carri'ed by the described.

7. In a type ba'r making machine, the

with and moves with said justifier hammer,

a trainoii' mechanism which includes the line carrier and a movable part carried'ther'eby for causing said;dog to move into operative position, and means, which are caused to opepat'e by the assemblage of a justifiable linebfi'natrices and space bands, for renderline carrier irom operating as ing inoperative the movable member Preferred to carried by the line'carrier; c 8. In a, type bar ni'aking the 1 combination of means for supportingi'and-fi clampinga line of matrices and expanding space bands, a spring actuated'j' justifier hammer, means for"de l1 ver1ng a line of gnatrices and space hands into the embrace 10f said supporting and clamping means, a

normally inoperativ'edo for stopping the justnier hammer in ,a' 'de nite mid-position, mechanism for rendering said dog, operative, which mechanism is caused to act by the assembling of a short unjustifiable line and the subsequent movement of said short line into the embrace of the line supporting and clamping means.

9.'In' a type bar making machine, the combination of means fer? supporting an unjustified line made up'iof matrices and wedge space bands, a spring-actuated justifier hammer for engaging'the space bands and expanding them, means for limiting the spring induced movement of'saidxjustifier hammer, means for supporting a line of matrices and space bands in the required relation to the justifie'r hammer, a line carrier formovihgan assembled line-of matrices and space bands onto said supporting means, and a movable devicecarried by said line carrier for causing the operationpfthe means for limiting thespring ,induced movement of the justifier hammer.

10. In a type bar making machine, the combination of an elevator constructed to support a line of matricesandwedge space bands,'and adapted to move down to carry said line in the position it occupieswhile the space bands therein are being expanded means for clamping said line, a line carrier for moving said llne onto the elevator, a spring actilated justifier hammer for ex- ,panding said space bands, normally inmeans for so stopping said justifier hammer.

" 11. In a type bar" making machine, the

combination offan elevator constructed-to support a line of matrices andjw edge space actuated justifier hammer, a dog movable bands and adapted'to move down to carry means for clamping said. line, a springinto and out of the path of. a partwhich is connected with'and moved with said justifier hammer, a train of ';mechanism by whichsaid dog is moved mto operative posi- 'tion, which train of mechanism includes a' line carrier by which the line is moved onto said elevator, and mechanism which be comes operative whenthe. line has reached justifiable length for rendering inoperative "the train of mechanism by which the dog is moved into operative posltion.

12. In a type bar making 'machine, the combination of an elevator constructed to support a line of matrices and wedge space bands and adapted to move down to carry said line to the position it occiipies while the space bands therein are being expanded,

means for clamping said line, a" spring actuated justifier hammer, adog carried by said elevator and adapted to occupy an operative position in which it projects into the path of a part which is connected with and moves with said justifir hammer or an'inoperative osition in which it lies outsideof said pat and means for controlling the position of said dog.

. 13. In a type bar making machine, the combination of an elevator constructed to support a line of matrices and wedge space bands and adapted to move down to carry said line to the position it occupies while the space bands therein are being expanded,

fying said line, a spring actuated justifien means for clamping said line, a springactuated justifier hammer, a dog carried by said elevator and adapted to occupy an operative position in which it projects into t e path of a part which is connectedwith and moves with said justifier hammeiijfor an inoperative position in which it lies outside of said path, means for normally, holdin said do in the inoperative position, an means or causing said dog to move into operative position.

14. In a type bar making machine, the combination ofan elevator adapted to support an unjustified line of matrices and space bands while the space bands are being expanded, means for clamping said line, which elevator moves downward to carr said un ustified line mto position for ustihammer, a rock shaft carried by said ele- "vator, a dog fixed to said rock shaft and adapted to project into the path of a part which is connected with and moves with the justifier hammer, a spring holding the same in an inoperative position, an arm fixed to said rock shaft, and a stop movable into and out of the path ofsaid arm.

In 'atype bar making machine, the

combinationgof, an elevator adapted to supsald line to the position-it'occupies' while the space bands thereinarebeing expanded,"

port an unjustlified line of matrices and space bands while the space bands are being Q expanded, means for clamping said line,

in an inoperative,position, an arm fixed toi said rock shaft, astop movable into and out of the pathof arm, spring actuated mechanism forgrm ng said stop into operative position, Hana catch restraining the movement of said mechanism.

16. In a type ba'r making machine, the combination of an elevator adapted to sup: port an unjustified line of matrices and space bands while the space bands are being expanded means for clamping said line,

which elevator-moves downward to carry said unjustified line into position for justifying said line, a spring actuated justifier hammer, a rock shaft carried by said elevator, a dog fixedto said rock shaft and adapted to project into the path of a part which is connected with and moves with'the justifier hammer, a spring holding thesame in an inoperative position, an-arm fixed to said rock shaft, a stop movable into and out of the path of said arm, spring. actuated mechanism formoving said stop into operative position, a-catch restraining the movement of said mechanism, a line carrier for moving an unjustified line onto the elevator,

combination of an elevator adapted to sup- I port an unjustified line of matrices and space bands while the space bands are being expanded means for clamping said line, which elevator moves downward to carry said unjustified line into position forjustifying said line, a spring actuated justifier hammer, a rock shaft carried b said elevator, a dog fixed to said rock sha t and adapted to projectinto the path offa part which is connected with and moves with the justifier hammer, a spring holding the same in an inoperative position, an arm fixed to' said'.

rock shaft, a stop movablq'i nto and outof the path of said arm, spring actuated mechanism for moving said stop into operative position, a catch restraining .themovement of said mechanism,a line. carrier for moving an unjustified line onto the elevator, a device I carried thereby for releasing said catch, and means for moving the device .esrried by the line carrier into inoperative po itiom.

18. In' a. type bar mtldng machips'the 13.

combination of an elevator adapted to support an unjustified line of matrices and space bands while the space bands are being expanded means for clamping said line,

which elevator moves downward to carry said unjustified line into position for justifying said line, a spring actuated justifier. hammer, a rock shaft carried by said elevator, a dog fixed to said rock shaft and adapted to project into the path of a part which is connected with and moves withthe justifier hammer, a spring holding the same in an inoperative position, an arm fixed to said rock shaft, a stop movable into and out of the path of said arm, spring actuated mechanism for moving said stop into operative position, a catch restraining the movement part of the machine frame and be thereby moved into inoperative position.

19. In a type bar making machine, the combination of a line carrier, a spring actuated pawl pivoted thereto, a plunger mounted on the line carrier and engaging said "pawl, a spring actuated detent pivoted to the line carrier and engaging said plunger,

a-rock shaft having one arm adapted toengage said plunger, and having also a second arm, a detent slide-which is movable by a growing matrix line, and a cam plate connected with said detent slide for engagement with the last mentioned arm on said rock shaft.

20. In a type bar making machine, the combination of a line carrier, a pawl pivoted thereto, a plunger mounted on the line carrier and engaging said pawl, a spring actuated detentpivoted to the line carrier and engaging said plunger, a rock shaft having one arm adapted to engage said plunger and having also a second arm, a detent slide which is movable by a growing matrix line, and a cam plate connected with said detent slide for engagement with the lastmentioned arm on said rock shaft, said cam late being adjustably secured to said detent slide.

21. In a type bar making machine, the combination of a line carrier, a spring pawl pivoted thereto, a plunger mounted'on the line carrier and engaging said pawl, a spring actuated detent pivoted to the line carrier for engaging said plunger, a rock shaft mounted in bearings in whichit is capable of moving endwise, an arm on said rock -shaft having a tongue and groove connection' therewith and adapted to engage said plunger, means preventing said arm from moving endwise with the rock shaft,

means by which the release of a space band causes a short endwise movement of said rock shaft, a detent slide adapted to be ,moved by the growing matrix line, a cam plate fixed to said detent slide, and an arm fixed to said rock shaft and adapted to ena e said cam )late.

In testimony whereof, we hereunto afiix our signatures 1n the presence of two witnesses.

DAVID PETRI-PALMEDO, EDWARD F. GODDARD.

lVitnesses:

GILBERT B. FAYETTE,

JAMES H. LONDON. 

